I have a PEPE Tools Jump Ring Maker System. It comes with everything
the basic Jump Ringer comes with, but also with 20 round mandrels
that range from 2.5mm to 12mm diameter. The saw blade that comes with
it is thicker than the Jump Ringer, I am told. (Look in the archives
for a recent thread on that.)
So far I have been very happy with it. You can't go wrong with
either system. Mandrels of other shapes and sizes are available; they
will fit either system, I'll bet, since both use the 3-tooth Jacobs
chuck type of quick release. The PEPE Tools kit is by far the most
You will need a Foredom (or similar) flex shaft, with a #30
handpiece...that's what the cutting system is designed to use.
Dremel will NOT do (first-hand experience on my part). Make sure you
have this on hand before you get the jump ring system.
No matter which systems you buy, here are a few safety tips to
Wear safety goggles before you start cutting. Metal dust becomes
airborne, and it's very fine.
Don't have your foot anywhere near the pedal until you are certain
everything works correctly, the top is fastened down, and the
cutting blade is in the slot. The system is designed with safety in
mind, but "pilot error" can overcome most safety devices.
After the first, second and third use (initially, or anytime after
you change a blade), loosen the handpiece, push it out of the
housing (leave the blade on), and check to make sure the blade
mandrel is tight!!! I was careful the first time, but after blade
replacement I didn't check. Could not figure out why my new blade was
binding and getting so hot...turns out the mandrel screw had backed
out and only the blade guide was keeping the blade from flying
Tighten both ends of the cutting slot evenly, and at the same
time. If you tighten one side, then the other, there will be uneven
tension and subsequent binding on the blade. It's tedious, but I hold
the cutting slot down with light pressure on the coil while I tighten
the top nuts. Then I pick up the loaded device and check to make sure
the clearance on the left is the same as on the right.
Until you get one and handle it, some of my instructions won't make
sense. Just re-read after you get the jump ring system.
I have never tried cutting square or triangular 'rings', but it
should not be too much different. Don't know about oval at all;
maybe someone else has experience? I know the mandrels are out there.